* {
  padding: 0;
  margin: 0;
  list-style: none;
  outline: none;
  border: none;
}

a {
  text-decoration: none;
  outline: none;
  color: black;
}

body,
html {
  width: 100vw;
  height: 100%;
  color: #575757;
  background: #F5F5F5;
  font-size: 12px;
  overflow: hidden;
}

header {
  width: 100%;
  height: 212px;
  background: linear-gradient(to right, #EE744F,#F72C2C);
}

header .header-top {
  box-sizing: border-box;
  padding: 26px 5px;
  position: relative;
}

header .header-top span {
  position: absolute;
  top: 50%;
  left: 50%;
  font-size: 16px;
  font-weight: 600;
  transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
}
header .header-top a {
  position: absolute;
  left: 14px;
  top: 20px;
}
header .header-top a img {
  width: 11px;
}

header .success {
  /* border: 1px solid black; */
  display: flex;
  align-items: center;
  justify-content: center;
}
header .success img {
  width: 23px;
  height: 23px;
  margin-right: 10px;
}
header .success span{
  font-size: 24px;
  color: #fff;
}
header .back {
  /* border: 1px solid black; */
  display: flex;
  align-items: center;
  justify-content: space-around;
  margin-top: 40px;
}
header .back button {
  width: 92px;
  height: 30px;
  border: 1px solid #fff;
  font-size: 14px;
  color: #fff;
  outline: none;
  background: none;
  border-radius: 15px;
  -webkit-border-radius: 15px;
  -moz-border-radius: 15px;
  -ms-border-radius: 15px;
  -o-border-radius: 15px;
}

/* 媒体查询 */
@media screen and (min-width: 500px) {
  body {
    margin: 100px auto 0;
    width: 375px;
    height: 700px;
    border: 1px solid grey;
    z-index: 999;
  }
}